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By selling 100 pencils, a shopkeeper gains the selling price of 20 pencils. His gain percent is
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- 25%
- 20%
- 15%
- 12%
Correct Option: A
By selling 100 pencils, shopkeeper gains the SP of 20 pencils.
Clearly, CP of 100 pencils = SP of 80 pencils
Let CP of each pencil = $ 1.
CP of 80 pencils = $ 80
SP of 80 pencils = $ 100
Gain = SP of 80 pencils - CP of 80 pencils = 100 - 80 = $ 20
| ∴ Gain percent = | × 100 = 25% | 80 |
Using the given formula :
Here, p = 100, q = 20
| Profit % = | p - q |
| Profit % = | 100 - 20 |
| Profit % = | = 25% | 80 |
